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Finding the Fourth Proportional to 368,685.07, 508,823.78 and 225,540.45

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Solution

The fourth proportional to 368,685.07, 508,823.78 and 225,540.45 is: 311,269.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,685.07 : 508,823.78 = 225,540.45 : x
  2. Step 2: Convert to fraction form
    368,685.07/508,823.78 = 225,540.45/x
  3. Step 3: Cross multiply
    368,685.07x = 508,823.78 × 225,540.45
  4. Step 4: Simplify right side
    368,685.07x = 114,760,343,184.20
  5. Step 5: Solve for x
    x = 114,760,343,184.20/368,685.07
  6. Step 6: Final answer
    x = 311,269.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.